Barnett already faces charges for sending other threatening letters to the Washington County sheriff and deputies and for assaulting a corrections officer with feces and urine.

A judge has banned Barnett from mailing letters to anyone, or having any access to any writing instruments. He also prohibited Barnett from having any medications like ibuprofen, TUMS or any substance that can be turned into powder.

He has since been transferred from the Multnomah County Jail to the federal prison in Sheridan.

According to multiple sources, none of the outgoing mail at the Multnomah County Jail is inspected before it goes out.